linux-kernel - [PATCH] habanalabs: check if CoreSight is supported

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Date:   Sun, 10 May 2020 14:10:15 +0300
From:   Omer Shpigelman <oshpigelman@...ana.ai>
To:     oded.gabbay@...il.com
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] habanalabs: check if CoreSight is supported

Coresight is not supported on simulator, therefore add a boolean for
checking that (currently used by un-upstreamed code).

Signed-off-by: Omer Shpigelman <oshpigelman@...ana.ai>
---
 drivers/misc/habanalabs/goya/goya.c  | 1 +
 drivers/misc/habanalabs/habanalabs.h | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index b3e2354aaca2..fb2ff82e0db5 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -751,6 +751,7 @@ static int goya_sw_init(struct hl_device *hdev)
 	}
 
 	spin_lock_init(&goya->hw_queues_lock);
+	hdev->supports_coresight = true;
 
 	return 0;
 
diff --git a/drivers/misc/habanalabs/habanalabs.h b/drivers/misc/habanalabs/habanalabs.h
index a68df32094f1..cfb306daa8d4 100644
--- a/drivers/misc/habanalabs/habanalabs.h
+++ b/drivers/misc/habanalabs/habanalabs.h
@@ -1415,6 +1415,7 @@ struct hl_device_idle_busy_ts {
  * @cdev_sysfs_created: were char devices and sysfs nodes created.
  * @stop_on_err: true if engines should stop on error.
  * @supports_sync_stream: is sync stream supported.
+ * @supports_coresight: is CoreSight supported.
  */
 struct hl_device {
 	struct pci_dev			*pdev;
@@ -1498,6 +1499,7 @@ struct hl_device {
 	u8				cdev_sysfs_created;
 	u8				stop_on_err;
 	u8				supports_sync_stream;
+	u8				supports_coresight;
 
 	/* Parameters for bring-up */
 	u8				mmu_enable;
-- 
2.17.1